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日本东京一个污水干线建筑工地,把现场量测工作偏重在与软土地层盾构法隧道有关的沉降方面,并对沉降的特点及与沉降有关系的因素进行研究。沉降有各种征兆,它们系由地下水位下降、开挖面地层坍陷、尾部孔隙沉陷和延伸以及地基土扰动引起的。这些问题又受到盾构机械、辅助处治、回填灌浆和操作控制质量的影响。作者提出把各种要素迭加或者合成起来作为预测沉降的一种方法。作者还强调应从上述因素及地面环境和其他设计规则来考虑沉降问题。根据该建筑工地所进行的调查,本文报道了住宅可能受损坏的范围。
Tokyo, Japan, a sewage Main Line construction site, the site measurement emphasis on the settlement with the shield tunnel tunnel in soft ground, and the characteristics of settlement and the factors related to settlement are studied. There are various signs of settlement, which are caused by the descent of the groundwater table, the collapse of the excavated surface, the settlement and extension of the tail pore, and the disturbance of the foundation soil. These problems are again influenced by the quality of shield machinery, auxiliary treatment, backfill grouting and operation control. The authors propose that various elements be superimposed or synthesized as a way to predict settlement. The authors also emphasize that settlement should be considered from the above factors and from the ground environment and other design rules. According to a survey conducted at the construction site, this article reports on the possible damage to the home.